Antiarrhythmic agents are a class of drugs used to treat irregular heartbeats, known as arrhythmias. These agents work by modifying the electrical activity of the heart to restore normal rhythm. They are categorized into five classes based on their mechanism of action, according to the Vaughan Williams classification. These classes include sodium channel blockers, beta-blockers, potassium channel blockers, calcium channel blockers, and miscellaneous agents.
